return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
-static ssize_t iwl_dbgfs_power_down_allow_write(struct file *file,
- const char __user *user_buf,
+static ssize_t iwl_dbgfs_disable_power_off_read(struct file *file,
+ char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_mvm *mvm = file->private_data;
- char buf[8] = {};
- int allow;
-
- if (!mvm->ucode_loaded)
- return -EIO;
-
- count = min_t(size_t, count, sizeof(buf) - 1);
- if (copy_from_user(buf, user_buf, count))
- return -EFAULT;
-
- if (sscanf(buf, "%d", &allow) != 1)
- return -EINVAL;
+ char buf[64];
+ int bufsz = sizeof(buf);
+ int pos = 0;
- IWL_DEBUG_POWER(mvm, "%s device power down\n",
- allow ? "allow" : "prevent");
+ pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d0=%d\n",
+ mvm->disable_power_off);
+ pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d3=%d\n",
+ mvm->disable_power_off_d3);
- /*
- * TODO: Send REPLY_DEBUG_CMD (0xf0) when FW support it
- */
-
- return count;
+ return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
-static ssize_t iwl_dbgfs_power_down_d3_allow_write(struct file *file,
- const char __user *user_buf,
- size_t count, loff_t *ppos)
+static ssize_t iwl_dbgfs_disable_power_off_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
{
struct iwl_mvm *mvm = file->private_data;
- char buf[8] = {};
- int allow;
+ char buf[64] = {};
+ int ret;
+ int val;
+
+ if (!mvm->ucode_loaded)
+ return -EIO;
count = min_t(size_t, count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, count))
return -EFAULT;
- if (sscanf(buf, "%d", &allow) != 1)
+ if (!strncmp("disable_power_off_d0=", buf, 21)) {
+ if (sscanf(buf + 21, "%d", &val) != 1)
+ return -EINVAL;
+ mvm->disable_power_off = val;
+ } else if (!strncmp("disable_power_off_d3=", buf, 21)) {
+ if (sscanf(buf + 21, "%d", &val) != 1)
+ return -EINVAL;
+ mvm->disable_power_off_d3 = val;
+ } else {
return -EINVAL;
+ }
- IWL_DEBUG_POWER(mvm, "%s device power down in d3\n",
- allow ? "allow" : "prevent");
-
- /*
- * TODO: When WoWLAN FW alive notification happens, driver will send
- * REPLY_DEBUG_CMD setting power_down_allow flag according to
- * mvm->prevent_power_down_d3
- */
- mvm->prevent_power_down_d3 = !allow;
+ mutex_lock(&mvm->mutex);
+ ret = iwl_mvm_power_update_device_mode(mvm);
+ mutex_unlock(&mvm->mutex);
- return count;
+ return ret ?: count;
}
static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
if (sscanf(buf + 16, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
- } else if (!strncmp("disable_power_off=", buf, 18)) {
+ } else if (!strncmp("disable_power_off=", buf, 18) &&
+ !(mvm->fw->ucode_capa.flags &
+ IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)) {
if (sscanf(buf + 18, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_DISABLE_POWER_OFF;
MVM_DEBUGFS_READ_FILE_OPS(stations);
MVM_DEBUGFS_READ_FILE_OPS(bt_notif);
MVM_DEBUGFS_READ_FILE_OPS(bt_cmd);
-MVM_DEBUGFS_WRITE_FILE_OPS(power_down_allow);
-MVM_DEBUGFS_WRITE_FILE_OPS(power_down_d3_allow);
+MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off);
MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats);
MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain);
MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR);
MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR);
MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, S_IRUSR);
- MVM_DEBUGFS_ADD_FILE(power_down_allow, mvm->debugfs_dir, S_IWUSR);
- MVM_DEBUGFS_ADD_FILE(power_down_d3_allow, mvm->debugfs_dir, S_IWUSR);
+ if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)
+ MVM_DEBUGFS_ADD_FILE(disable_power_off, mvm->debugfs_dir,
+ S_IRUSR | S_IWUSR);
MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, S_IRUSR);
MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir,
__le32 lprx_rssi_threshold;
} __packed;
+/**
+ * enum iwl_device_power_flags - masks for device power command flags
+ * @DEVIC_POWER_FLAGS_POWER_SAVE_ENA_MSK: '1' Allow to save power by turning off
+ * receiver and transmitter. '0' - does not allow. This flag should be
+ * always set to '1' unless one need to disable actual power down for debug
+ * purposes.
+ * @DEVICE_POWER_FLAGS_CAM_MSK: '1' CAM (Continuous Active Mode) is set, meaning
+ * that power management is disabled. '0' Power management is enabled, one
+ * of power schemes is applied.
+*/
+enum iwl_device_power_flags {
+ DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK = BIT(0),
+ DEVICE_POWER_FLAGS_CAM_MSK = BIT(13),
+};
+
+/**
+ * struct iwl_device_power_cmd - device wide power command.
+ * DEVICE_POWER_CMD = 0x77 (command, has simple generic response)
+ *
+ * @flags: Power table command flags from DEVICE_POWER_FLAGS_*
+ */
+struct iwl_device_power_cmd {
+ /* PM_POWER_TABLE_CMD_API_S_VER_6 */
+ __le16 flags;
+ __le16 reserved;
+} __packed;
+
/**
* struct iwl_mac_power_cmd - New power command containing uAPSD support
* MAC_PM_POWER_TABLE = 0xA9 (command, has simple generic response)
struct iwl_mvm_power_ops {
int (*power_update_mode)(struct iwl_mvm *mvm,
struct ieee80211_vif *vif);
+ int (*power_update_device_mode)(struct iwl_mvm *mvm);
int (*power_disable)(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
#ifdef CONFIG_IWLWIFI_DEBUGFS
int (*power_dbgfs_read)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
#ifdef CONFIG_IWLWIFI_DEBUGFS
struct dentry *debugfs_dir;
u32 dbgfs_sram_offset, dbgfs_sram_len;
- bool prevent_power_down_d3;
+ bool disable_power_off;
+ bool disable_power_off_d3;
#endif
struct iwl_mvm_phy_ctxt phy_ctxts[NUM_PHY_CTX];
return mvm->pm_ops->power_disable(mvm, vif);
}
+static inline int iwl_mvm_power_update_device_mode(struct iwl_mvm *mvm)
+{
+ if (mvm->pm_ops->power_update_device_mode)
+ return mvm->pm_ops->power_update_device_mode(mvm);
+ return 0;
+}
+
#ifdef CONFIG_IWLWIFI_DEBUGFS
static inline int iwl_mvm_power_dbgfs_read(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
sizeof(cmd), &cmd);
}
+static int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
+{
+ struct iwl_device_power_cmd cmd = {
+ .flags = cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK),
+ };
+
+ if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD))
+ return 0;
+
+ if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
+ cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_CAM_MSK);
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+ if ((mvm->cur_ucode == IWL_UCODE_WOWLAN) ? mvm->disable_power_off_d3 :
+ mvm->disable_power_off)
+ cmd.flags &=
+ cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
+#endif
+ IWL_DEBUG_POWER(mvm,
+ "Sending device power command with flags = 0x%X\n",
+ cmd.flags);
+
+ return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, CMD_SYNC, sizeof(cmd),
+ &cmd);
+}
+
#ifdef CONFIG_IWLWIFI_DEBUGFS
static int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
struct ieee80211_vif *vif, char *buf,
iwl_mvm_power_build_cmd(mvm, vif, &cmd);
- pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off = %d\n",
- (cmd.flags &
- cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK)) ?
- 0 : 1);
+ if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD))
+ pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off = %d\n",
+ (cmd.flags &
+ cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK)) ?
+ 0 : 1);
pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n",
iwlmvm_mod_params.power_scheme);
pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n",
const struct iwl_mvm_power_ops pm_mac_ops = {
.power_update_mode = iwl_mvm_power_mac_update_mode,
+ .power_update_device_mode = iwl_mvm_power_update_device,
.power_disable = iwl_mvm_power_mac_disable,
#ifdef CONFIG_IWLWIFI_DEBUGFS
.power_dbgfs_read = iwl_mvm_power_mac_dbgfs_read,
projects / firefly-linux-kernel-4.4.55.git / commitdiff